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【单选题】
无风流情况下测定计程仪改正率ΔL,已知两组横向测速标之间的距离为2n mile ,若所得计程仪读数差 为1.9n mile ,则相应的计程仪改正率ΔL为_____ 。
A.
+ 5.0 ％
B.
- 5.0 ％
C.
+ 5.3 ％
D.
- 5.3 ％
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参考答案：
举一反三
【单选题】下列各种现象中不属于自然选择的是?
A.
纯种长毛狗的形成
B.
因工业污染而使某种蛾子发生黑化
C.
某些细菌对于抗生素的抗性
D.
头发里的虱子经DDT处理后仍有突变种存活下来
查看完整题目与答案
【简答题】Every now and then we hear news about poisonous food, such as tainted milk powder, illegal food additives, and illegal cooking oil, which pose great er to peoples health. Give your ideas of cracki...
查看完整题目与答案
【单选题】若事件A与事件B互不相容,且P(A)=0.5, P(B) =0.2 , 则 P(A+B )=( )
A.
0.3
B.
0.7
C.
0.2
D.
0.5
查看完整题目与答案
【判断题】若事件A与事件B互不相容,则P(A∪B)=P(A)+P(B)。( )
A.
正确
B.
错误
查看完整题目与答案
【单选题】若事件A与事件B互不相容,且P(A)=0.5, P(B) =0.2 , 则 P(A-B )=( )
A.
0.3
B.
0.7
C.
0.2
D.
0.5
查看完整题目与答案
【判断题】若事件A与事件B互不相容,则
A.
正确
B.
错误
查看完整题目与答案
【单选题】Which of the following circumstances is NOT plagiarism?
A.
You looked for related articles online and thought the ideas in one of them were exactly identical with yours, so you took it as your own to make a speech on the same topic.
B.
The speaker collected ideas from different sources to make a completely new speech of his/her own.
C.
The speaker gave all credits but one to the original authors, because s/he believed they thought the same way.
D.
The speaker said in his/her speech, “as John F. Kennedy said, ‘Ask not what your country can do for you, but ask what you can do for your country’.”
查看完整题目与答案
【单选题】Task 2 Directions: This task is the same as Task 1. The 5 questions or unfinished statements are numbered 41 through 45. There are three ways you can go about writing a resume: you can rely solely on ...
A.
make it look like something different from the previous one
B.
change the data and rewrite it
C.
give some new information about it
D.
cut off the details and use as few words as possible
查看完整题目与答案
【简答题】SECTION A COMPOSITION (35 MIN) There are two factors for students to enter a university: school brand or major. Which do you think is more important? Write on ANSWER SHEET TWO a composition of 200 wor...
查看完整题目与答案
【单选题】下列各现象中不属于自然选择作用的例子的是 [     ]
A.
头发里的虱子经DDT处理后仍有突变种存活下来
B.
纯种长毛垂耳狗的形成
C.
因工业污染而使某种蛾子发生黑化
D.
某些细菌对抗生素的抗性
查看完整题目与答案
相关题目：
【单选题】下列各种现象中不属于自然选择的是?
A.
纯种长毛狗的形成
B.
因工业污染而使某种蛾子发生黑化
C.
某些细菌对于抗生素的抗性
D.
头发里的虱子经DDT处理后仍有突变种存活下来
查看完整题目与答案
【简答题】Every now and then we hear news about poisonous food, such as tainted milk powder, illegal food additives, and illegal cooking oil, which pose great er to peoples health. Give your ideas of cracki...
查看完整题目与答案
【单选题】若事件A与事件B互不相容,且P(A)=0.5, P(B) =0.2 , 则 P(A+B )=( )
A.
0.3
B.
0.7
C.
0.2
D.
0.5
查看完整题目与答案
【判断题】若事件A与事件B互不相容,则P(A∪B)=P(A)+P(B)。( )
A.
正确
B.
错误
查看完整题目与答案
【单选题】若事件A与事件B互不相容,且P(A)=0.5, P(B) =0.2 , 则 P(A-B )=( )
A.
0.3
B.
0.7
C.
0.2
D.
0.5
查看完整题目与答案
【判断题】若事件A与事件B互不相容,则
A.
正确
B.
错误
查看完整题目与答案
【单选题】Which of the following circumstances is NOT plagiarism?
A.
You looked for related articles online and thought the ideas in one of them were exactly identical with yours, so you took it as your own to make a speech on the same topic.
B.
The speaker collected ideas from different sources to make a completely new speech of his/her own.
C.
The speaker gave all credits but one to the original authors, because s/he believed they thought the same way.
D.
The speaker said in his/her speech, “as John F. Kennedy said, ‘Ask not what your country can do for you, but ask what you can do for your country’.”
查看完整题目与答案
【单选题】Task 2 Directions: This task is the same as Task 1. The 5 questions or unfinished statements are numbered 41 through 45. There are three ways you can go about writing a resume: you can rely solely on ...
A.
make it look like something different from the previous one
B.
change the data and rewrite it
C.
give some new information about it
D.
cut off the details and use as few words as possible
查看完整题目与答案
【简答题】SECTION A COMPOSITION (35 MIN) There are two factors for students to enter a university: school brand or major. Which do you think is more important? Write on ANSWER SHEET TWO a composition of 200 wor...
查看完整题目与答案
【单选题】下列各现象中不属于自然选择作用的例子的是 [     ]
A.
头发里的虱子经DDT处理后仍有突变种存活下来
B.
纯种长毛垂耳狗的形成
C.
因工业污染而使某种蛾子发生黑化
D.
某些细菌对抗生素的抗性
查看完整题目与答案
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